Drill



R. KRAUSE Nov. 26, 1929.

DRILL Filed Aug. 3, 192

HW 6 a 4 0 m w 1 1 g 1 4 "V, m W 11, a I 1 X LIN @W W I 7 Fatented Nov. 26, 1929 UNITED STATES REINHOLD KRAUSE, OF COLUMBIA FALLS, MONTANA DRILL Application filed August 3, 1928.

This invention relates to improvements in drill presses or stands embodying among other characteristics a supporting structure adapted to dispose the drill at any desired inclinat-ion.

Another object of the invention comprehends a swinging bearing member for the drill chuck.

A further object of the invention contemplates a rotatable element carried upon the drill chuck.

More specifically stated the supporting structure is foldably connected whereby the same may be readily set up for use.

With the above and other objects in View, the invention further consists in the following novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawing and pointed out in the appended claims.

In the drawing Figure 1 is a side elevation of the invention while in use.

Figure 2 is a rear elevation of the invention.

Figure 8 is a detail sectional view taken through the drill chuck and mounting therefor within the bearing member.

Referring to the drawing in detail, wherein like characters of reference denote corresponding parts, the reference characters 10 and 11 indicate companion supporting members hingedly connected, as at 12, upon the uppermost ends thereof through the instrumentality of strap hinges and the like.

Penetrating elements 13, projected from the lowermost ends of the supporting members, are adapted for engagement with the ground to prevent displacement of the stand when set up for use.

A bearing block 14:, having an L-shaped attaching plate 15 pivotally mounted, as indicated at 16, preferably upon the outer side of the supporting member 10, is provided with a bore 17 lined with a babbitt 18. A drill chuck shaft or possibly a drill shank, such as Serial No. 297,246.

indicated at 19, is adapted for sliding movement within the babbitt.

A hand wheel 20, having a socket 21 adapted to accommodate the uppermost end of the chuck or drill shank, is adapted for locking connection therewith through the instrumentality of a set screw 22. The hand wheel may be provided with an eccentrically mounted crank arm after the manner of the steering wheels of steam rollers, agricultural implements, road scrapers and the like, such as indicated at 24.

As generally known in stump blasting, a crow bar or other implement is employed to dig around and beneath a stump. The dynamite or other explosive is then scattered beneath the stump and the charge set off. The ground loosened by the excavating permits the greater part of the power to escape. My idea is to drill holes in stumps just above the crowns of the roots. When the dynamite is applied within solid bores, only half the amount of dynamite is required in comparison to the application of same beneath the roots of the stump. As illustrated in Figure 1 of the drawing, the hole is shown as being drilled at 15 in order that the dynamite may be appliedimmediately above the crown of the roots.

'1 he pivot mounting for the bearing member 14: upon the outer side of the supporting member 10 will facilitate disposition of the shank 19 at any inclination whereby the stumps may be drilled at angles of no mat ter what the adjacent topography may be.

The invention is susceptible of various changes in its form, proportions and minor details of construction, and the right is herein reserved to make such changes as properly fall within the scope of the appended claim.

Having thus described the invention, what is claimed is A drill construction comprising supporting members having a common pivot connection at the uppermost meeting ends thereof,

a bearing block having a bore, an L-shaped attaching plate carried by the bearing block and swingably mounted upon the outer side of one of the supporting members, and a drill having the shank therefor slidably and r0- tatably mounted within the bore of the bear ing block and Which when called into use provides a oomplemental support for the supporting members.

In testimony whereof I afiix my signature.

REINHOLD KRAUSE. 

